Karo syrup and about 10% 20 mule team Borax. Warm a few seconds to dissolve. Squirt bottle. Put in cracks and holes, somewhere that animals will not be able to eat the syrup. Probably not kill the animals but if they get enough it will give them a tummyache. Ants eat the syrup--carry it to nest and quueen dies. Queens can live up to 20 years and produce many more queens and colonies. This eating,carrying to nest takes a few days. IT WORKS.